Honda BFP9.9DK3XHS 9.9HP 25in Four Stroke Power Thrust Outboard Motor

Description

Harness massive low-end shaft torque through the Honda BFP9.9DK3XHS Extra Long Outboard Motor to maintain complete vessel command on high-transom sailboats. The 222 cc twin-cylinder four-stroke engine produces 9.9 horsepower at 5500 RPM. Equipped with an extra-long 25-inch shaft, this power plant swings an oversize four-blade prop that burns a mere 0.85 gallons per hour at cruising speeds.

High-tensile aluminum alloy protects the engine block against continuous marine corrosion. Internal cylinder walls feature pressed-in cast iron sleeves to retain cross-hatch hone oil films. Dry weight measures 119 lbs. Crankcase capacity reaches 1.1 quarts of motor oil, while fuel feed hooks into a standard quick-connect Honda male fuel plug.

Key Features of Honda BFP9.9DK3XHS

Naval shipwrights buy Honda BFP9.9DK3XHS inboard engine auxiliary units when deep sailboat transoms demand long shaft extensions to prevent propeller ventilation. The high-thrust lower unit moves tons of displacement weight with immediate throttle response.

• Extra-long 25-inch shaft housing keeps cooling water inlets submerged in rough ocean chop
• Special 10-inch diameter four-blade propeller develops extreme reverse thrust to stop heavy boats
• Manual pull starter pairs with an integrated automatic internal cylinder compression release
• Honda BFP9.9DK3XHS exhaust relief holes discharge gasses above water during slow reverse gear engagement
• Pendulum style engine mount cushions eliminate engine shake across low-speed trolling ranges
• Fold-down steering tiller handle incorporates a front-mounted mechanical forward-neutral-reverse shift lever
• Visual oil pressure indicator light confirms safe internal engine lubrication status from the helm
• Stainless steel water pump drive shaft resists marine salt pitting during year-round water immersion

Combustion Behavior Heat Limits

Combustion chambers feature cross-flow valve placement to deliver 10.5 lb-ft of shaft torque at 4500 RPM. A wax-pellet water thermostat holds engine block metal temperatures at 145°F to ensure complete fuel atomization. Raw sea water circulates through corrosion-coated cylinder head passages to discharge engine heat before exhaust gasses leave through the lower propeller hub passage.

Stern Transom Integration

The mounting clamp assembly fastens over 25-inch transom motor boards using dual threaded manual clamp pads. The engine bay remains outside the vessel stern, requiring 18 inches of transom well depth for full manual tilt clearance. Manual tilt pins adjust through five distinct pin holes to trim shaft angle against stern wave action.

Shift Dynamics Restricted Operation

Tiller handle steering offers positive tactile feedback through mechanical friction adjusters. A fresh water flush plug allows garden hose connection to rinse block galleries after sea work. This outboard engine is not engineered for fast planing hydroplanes, dry surface drive operations, or operation in shallow silty sand flats.

• Check engine oil condition with the dipstick each shift
• Inspect cooling tell-tale stream water discharge every hour of run time
• Replace water pump rubber impeller vanes every 12 months

Warranty Statement Package Contents

Commercial owners receive 3-Year warranty coverage on mechanical drive components. The wooden shipping container contains the 25-inch outboard engine unit, four-blade high-thrust propeller, 3.1-gallon remote fuel tank with primer hose, tool kit, spare cotter pins, and original operator documentation.